Unit 2A Review

What is the next term in the arithmetic sequence 3, 7, 11, 15, ...?

• 18

• 19

• 20

• 21

Which function represents an exponential growth?

Find the common difference in the arithmetic sequence 10, 5, 0, -5, ...

• 5

• -5

• 0

• -10

What is the 5th term of the geometric sequence 2, 6, 18, 54, ...?

• 162

• 108

• 216

• 324

Which of the following represents a linear function?

What is the sum of the first 5 terms of the arithmetic sequence 4, 9, 14, 19, ...?

• 70

• 75

• 65

• 60

If a geometric sequence starts with 1 and has a common ratio of 3, what is the 4th term?

• 9

• 27

• 81

• 243

Which equation represents an exponential decay?

Determine the common ratio of the geometric sequence 5, 15, 45, 135, ...

• 2

• 3

• 4

• 5

What is the explicit formula for the nth term of the arithmetic sequence where the first term is 6 and the common difference is 4?